Safety lock for windows



FIG. 1 is a perspective view of a safety lock for windows showing our new design;

FIG. 2 is a view similar to FIG. 1 showing another position of the safety lock for windows;

FIG. 3 is a front view of the safety lock for windows;

FIG. 4 is a rear view of the safety lock for windows;

FIG. 5 is a top plan view of the safety lock for windows; and

FIG. 6 is a bottom plan view of the safety lock for windows. 

The ornamental design for a safety lock for windows, substantially as shown and described. 